The NR300 is a noise reduction effects pedal built to clean up unwanted hiss and hum from a guitar signal chain, particularly useful with high-gain distortion pedals that tend to amplify noise along with the signal. Placing the NR300 in the right spot in your chain can noticeably tighten up a noisy high-gain tone. The NR300 solves a common problem for players running aggressive gain, tightening up a noisy high-gain tone that would otherwise carry hiss and hum straight through to the mix. Features: Effectively eliminate unwanted noise and hum without altering your tone Preserves the original attack and envelope while leaving your playing and dynamics intact Dedicated threshold and decay controls plus a mute mode for flexibility Additional send/return loop for noise suppression of external effect units Status LED indicates effect on/off and battery status Runs on 9V battery or the Behringer PSU-SB DC power supply (not included) First-class electronic on/off switch for maximum signal integrity in bypass mode Designed and engineered in Germany